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evildran

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自然

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专业: 催化化学

[交流] 【求助】TiN (氮化钛) 高温氧化后会得到什么产物？

有谁做过相关实验研究的，TiN 高温（800 oC左右）下被氧化后生成什么物质啊？

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催化，化学！

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hrzhou

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evildran(金币+1,VIP+0):谢谢！可惜我不认得啊，呵呵 1-2 10:30
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Titre du document / Document title
Electrochemical and thermal oxidation of TiN coatings studied by XPS
Auteur(s) / Author(s)
MILOSEV I. (1) ; STREHBLOW H.-H. ; NAVINSEK B. (1) ; METIKOS-HUKOVIC M. ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) J. Stefan inst., 61111 Ljubljana Slovenia,

Résumé / Abstract
X-ray pbotoelectron spectroscopy (XPS) has been used to investigate the electrochemical and thermal oxidation of titanium nitride (TiN) coatings prepared by physical vapour deposition (PVD) at 200°C. Electrochemical oxidation of TiN was carried out at various potentials in phthalate buffer solution (pH 5.0). Evaluation of the XPS Ti 2p and N 1s spectra showed the presence of nitride, oxynitride and oxide species in the layer formed by anodic oxidation. The electrochemical oxidation of TiN to TiO2 proceeds through the formation of a mixed oxynitride/oxide layer, which transforms into oxide (TiO2) at sufficiently positive potentials (E > 1.1 V vs. SHE). The oxidation of TiN to TiO2 is accompanied by the formation of molecular nitrogen (N2). The thickness of the oxide layer reaches ∼ 7 nm after oxidation at the highest potential (1.9 V). A complete coverage of the TiN surface by TiO2 leads to an anodic peak in the polarization curve. On the basis of angle-resolved XPS measurements, two types of oxynitride species are identified, which are distributed differently throughout the oxidized layer. X-ray photoelectron spectroscopy depth profiles of TiN oxidized at 450°C and 600°C in an oxygen flow reveal that at the lower temperature an oxynitride layer is formed, whereas a thick TiO2 layer appears on top of TiN at the higher temperature. The interface between the nitride and oxide phases is relatively sharp. It is suggested that the mechanism of TiN oxidation proceeds by a progressive replacement of nitrogen by oxygen. The TiN coatings can be used up to 600°C as a protective coating in an oxygen atmosphere. Valance band spectra of TiN, as well as of electrochemically and thermally oxidized TiN, are presented and discussed.
Revue / Journal Title
Surface and interface analysis ISSN 0142-2421 CODEN SIANDQ
Source / Source
1995, vol. 23, no7-8, pp. 529-539 (50 ref.)
Langue / Language
Anglais

Editeur / Publisher
Wiley, Chichester, ROYAUME-UNI (1979) (Revue)

Mots-clés anglais / English Keywords
Experimental study ; Oxidation ; Electrochemical reaction ; Annealing ; Photoelectron spectroscopy ; X radiation ; Surface treatments ; Titanium nitrides ; Inorganic compounds ; Transition element compounds ;
Mots-clés français / French Keywords
Etude expérimentale ; Oxydation ; Réaction électrochimique ; Recuit ; Spectrométrie photoélectron ; Rayon X ; Traitement surface ; Titane nitrure ; TiN ; N Ti ; Composé minéral ; Métal transition composé ;
Mots-clés espagnols / Spanish Keywords
Reacción electroquímica ;
Localisation / Location
INIST-CNRS, Cote INIST : 18260, 35400005181434.0120